Analysis

  • max time kernel
    74s
  • max time network
    11s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    17-02-2021 13:51

General

  • Target

    Shipping_Doc.exe

  • Size

    560KB

  • MD5

    bdf9bdba4c1ed5d730d57483e942497c

  • SHA1

    3c7422da774329e4e85380aa8c9849b3d36b90b6

  • SHA256

    65463161760af7ab85f5c475a0f7b1581234a1e714a2c5a555783bdd203f85f4

  • SHA512

    4c48d1cd7a92163f251608fe995240d69358f51826e3101732252b65a76d6147b0ddf0e0d8f1f7fd4241a73101b3e69119ada0e2e7d20cc3e27c84bce02c2794

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot1358407337:AAEn_F0epiFnfXDLwBqJY0mfwmNqFKhvO3I/sendDocument

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • AgentTesla Payload 3 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious behavior: RenamesItself 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Shipping_Doc.exe
    "C:\Users\Admin\AppData\Local\Temp\Shipping_Doc.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1964
    • C:\Users\Admin\AppData\Local\Temp\Shipping_Doc.exe
      "{path}"
      2⤵
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: RenamesItself
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1804

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/1804-9-0x0000000000400000-0x0000000000466000-memory.dmp
    Filesize

    408KB

  • memory/1804-10-0x0000000000460B6E-mapping.dmp
  • memory/1804-11-0x0000000073E00000-0x00000000744EE000-memory.dmp
    Filesize

    6.9MB

  • memory/1804-12-0x0000000000400000-0x0000000000466000-memory.dmp
    Filesize

    408KB

  • memory/1804-14-0x0000000000580000-0x0000000000581000-memory.dmp
    Filesize

    4KB

  • memory/1804-15-0x0000000000581000-0x0000000000582000-memory.dmp
    Filesize

    4KB

  • memory/1964-2-0x0000000073E00000-0x00000000744EE000-memory.dmp
    Filesize

    6.9MB

  • memory/1964-3-0x0000000001310000-0x0000000001311000-memory.dmp
    Filesize

    4KB

  • memory/1964-5-0x0000000004AB0000-0x0000000004AB1000-memory.dmp
    Filesize

    4KB

  • memory/1964-6-0x00000000002A0000-0x00000000002A3000-memory.dmp
    Filesize

    12KB

  • memory/1964-7-0x0000000005050000-0x00000000050C9000-memory.dmp
    Filesize

    484KB

  • memory/1964-8-0x00000000052F0000-0x0000000005367000-memory.dmp
    Filesize

    476KB